Official Blackstaramps Forum

will probably sound the same as having the ISF at 12:00

yeh two el34's

I'm not sure about biasing the 20, I only have the 60. On the 60 there is a small two prong plug on the PCB that you can hook a multimeter to. I would absolutely recommend baising after changing the tubes. I just put a new set in mine tonight and they were WAY off :shock: It went from 52 mv to 72 w...

I am sure you can probably put new set of EL34's in and it would be fine. but, I will always check the bias just to be sure even if it doesnt need it. Its really easy to check so your better safe than sorry :D Did you ever post how to check the bias on the HT20 ? regardless the re-tubing went off w...

Yes, as far as I know no-one has ever died from changing tubes

I would really like closure on this issue too.

Ive just bought some new tubes for my HT20 ,

F*ck it , Im gonna just put em in regardless

Hi everyone,

I use my HT20H emulated output without a speaker all the time.

just make sure there is no speaker load or cable attached , and turn the master volume down to ZERO.

that is it !!!!! easy

Im pretty sure it covers this in the manual.

No 20w amp will give you clean headroom at loud volumes.

if you want loud and clean get a 100watter

+1 on a video or walkthru

I hate paying someone and waiting for a few days , to do something I used to do in 1 minute on my Randall RM100

IMO all valve (tube) amps should come with biasing probe ports and pots on the rear of the amp.

snakestretcher52 wrote:Ok, thanks. Mine's out for a warranty repair right now so I'll report back when it's fixed.

If the tubes do crap themselves in the warranty period , is this covered by warranty ?